Discharge device for liquid material containing solid particles, discharge method and coating device
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 8, 2022
Grant Date -
Jul 16, 2020
app pub date -
Dec 30, 2019
filing date -
Dec 30, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
Problem: To supply a device and a method for accurately discharging a fixed amount of a liquid, the liquid containing solid particles, in a state that the solid particles are dispersed in the liquid material. Solution: A discharge device for a liquid material containing solid particles includes a first reservoir, a first air pressure supply pipe, a metering portion having a metering hole, a plunger moving back and forth in the metering hole, a nozzle, a switching valve having a first position and a second position, a plunger driver, and a switching valve driver. The discharge device further includes a second reservoir, a second air pressure supply pipe, a branch portion provided in an upper portion of the metering hole and having a branch flow path, and an opening/closing mechanism that establishes or cuts off communication between the second reservoir and the metering hole. In the discharge device, the liquid material inside the first reservoir can be transferred to the second reservoir, and the liquid material inside the second reservoir can be transferred to the first reservoir. A discharge method is carried out using the discharge device.
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